Using Scrivener v.3.1.6.0 on Windows 11 Home v. 24H2.
Not sure if it’s a local issue or a Scrivener bug but…
The keyboard shortcut alt+shift+E for showing/hiding line numbers doesn’t work when either the main Editor or the Inspector Notes sections are selected. It works fine if the binder or synopsis sections are selected, and if either of the toolbar search fields are selected too. And all the other text editing shortcuts for show/hide the format bar, ruler, invisibles, markup, page view) etc work just fine with the editor and notes sections are selected, including the alt+shift+w toggle for every 5 lines, but you cant turn the line numbers on and off if the cursor is either in notes or the editor!